first, compare 6 and another 6. they must have difference.
$ y' l3 W. ?9 R2 n% V. x# M6 D公仔箱論壇second, divide those 6 heavier one into two, each has 3. u will find difference again.
% V/ x' Q6 R0 Z, t- ~# f8 C0 Ntvb now,tvbnow,bttvbthird time, if u put 2 and they are equal, u will know the different one.
8 \3 {0 R& d8 Q* i7 ~) K& U4 d2 Cso easy.... |